AUSTIN — Travis County District Attorney Rosemary Lehmberg heads to court this week as a defendant in a civil trial that could oust her from office.The trial set to start today stems from Lehmberg’s drunken driving arrest in April. She pleaded guilty and remained on the job. But the Austin American-Statesman reports that the civil trial will focus on whether she’s emotionally able to continue in office, whether she has an addiction and whether the public’s interest is better served by having someone else as the county’s chief felony prosecutor. The petition seeking her removal has been filed by Austin attorney Kerry O’Brien. He believes the integrity of the office is compromised as long as she’s there. A visiting judge from San Antonio will rule in the case.